MCQ
$\left( P \right)\,\xrightarrow{\Delta }\,\left( Q \right)$ metallic solid $ + \left( R \right) \uparrow \, + \,\left( S \right) \uparrow $

$\left( X \right)\,\xrightarrow{\Delta }\,\left( Y \right)$ amphoteric $ + \left( R \right) \uparrow \, + \,\left( S \right) \uparrow $

$P$ and $X$ are respectively

  • A
    $AgNO_3 ,\,LiNO_3$
  • $AgNO_3 ,\,Pb(NO_3)_2$
  • C
    $Hg_2(NO_3)_2 ,\,Ca(NO_3)_2$
  • D
    $NaNO_3 ,\,Zn(NO_3)_2$

Answer

Correct option: B.
$AgNO_3 ,\,Pb(NO_3)_2$
b
$\mathrm{AgNO}_{3} \stackrel{\Delta}{\longrightarrow} \mathrm{Ag}+\mathrm{NO}_{2} \uparrow+\frac{1}{2} \mathrm{O}_{2} \uparrow$

$\mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2} \stackrel{\Delta}{\longrightarrow} \underset{\text { Amphoteric }}{\mathrm{PbO}}+2 \mathrm{NO}_{2}+\frac{1}{2} \mathrm{O}_{2} \uparrow$

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